*{
    padding: 0;
    margin: 0;
}
html,body{
    width: 100%;
    height: 100%;
    background-color: pink;
}
.zhudaohang{
    width: 100%;   
    height: 15%;
    margin-top: 7%;
    float: left;
    background-color: blue;
}
.shang{
    width: 100%;
    height: 15%;
    background-color: lightseagreen;
}
.zhu{
    width: 80%;
    height: 70%;
    margin: 0 auto;
    background-color: yellow;
}
.zuo{
    width: 40%;
    height: 100%;
    background-color: lightskyblue;
    float: left;
}
.you{
    width: 60%;
    height: 100%;
    background-color: crimson;
    float: left;
}
.xia{
    width: 100%;
    height: 15%;
    background-color: yellow;
}